A major complaint about Google's Chrome web browser has been that so far, it is still not available on anything other than Windows. Google promised to deliver Chrome to Mac OS X and Linux as well, but as it turns out, this is a little harder than they anticipated, Ben Goodger, Google's Chrome interface lead, has explained in an email. It has also been revealed what toolkit the Linux version of Chrome will use: Gtk+.

I think that is the idea. Chrome will be a native browser on each platform, with a common rendering engine.

I think that the reasoning for that has to be with what Google wants to achieve with Chrome:

* A browser that is light and fast. A cross platform toolkit would probably be slower

* A browser that uses multiple processes for each tab. For this, they plan to use what the OS offers, instead of developing something that would then have to work across each platform. I'm sure this would have been a pretty major undertaking.